Smoke-consumer.



G. H. "TRIGGS. SMOKE consumiz.

APPLICATION FILED JUNE 22, 1908.

Patented Dec. 15, 1908.

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CHARLES H. TRIGGS, OF WILMINGTON, DELAWARE.

SMOKE-CONSUMER.

Specification of Letters Patent.

Patented Dec. 15, 1908.

Application filed June 22, 1908. Serial No. 439,824.

T 0 all whom it may concern:

Be it known that I, CHARLES H. TRIGGS, a citizen of the United States,residing at Wilmington, county of Newcastle, and State of Delaware, haveinvented certain new and useful Improvements in Smoke-Consumers, ofwhich the following is a specification, reference being had therein tothe accompanying drawing.

This invention relates to a smoke consumer and particularly to aconstruction whereby steam and highly heated air may be injected intothe fire box beneath a boiler or other furnace.

The invention has for an object to provide a nozzle member having bothits inlet and outlet openings communicating with the fire box, and aninjector inserted within the inlet of said nozzle so that the heatedproducts of combustion Within the fire box are drawn into the nozzle andthere combined with steam and air to superheat the latter so that whenagain discharged into the fire box it produces a thorough combustion ofthe gases therein preventing the emission of smoke and increasing theheating capacity of the fuel so as to reduce the consumption thereof andincrease the temperature of the fire box to a very high degree.

Other and further objects and advantages of the invention will behereinafter fully set forth and the novel features thereof defined bythe appended claims.

In the drawing :Figure 1 is a vertical section showing the applicationof the invention to a stationary boiler; Fig. 2 is an elevation showingthe inlets and discharges for the nozzle members; Fig, 3 is a verticalsection of a portion of a locomotive boiler showing the application of amodified form of the invention; Fig. 4 is an elevation with parts insection of the form of nozzle shown in Fig. 3.

Like numerals refer to like parts in the several views of the drawing.

The invention is herein shown applied to two different forms of boilerfurnaces, but it is applicable to any form of furnace or boiler firebox. In the form shown in Fig. 1, the nozzle member 10 is substantiallyU- shaped and embedded in the front wall 11 of the fire box. The inlet12 of this member is substantially circular and is open forcommunication with the upper portion of the fire box, while the outletend 13 thereof is elongated to form a sheet or spray directed againstthe fuel. inlet of the nozzle member is the air pipe 14 which extendsbetween the series of nozzles, as shown in Fig. 2, and at each end iscoupled to an intake 15 extending to the front of the furnace, shown bydotted lines in Fig. 2. By this means the necessary amount ofatmospheric air is introduced into the nozzle members. Communicatingwith each of these members is a steam injector 16 extending for adistance within the inlet 12 of the nozzle so as to discharge thereinbeyond the air pipe 14;. If so desired a sleeve or collar 17 ofrefractory material may be inserted within the nozzle at thiscommunicating-point to resist the high temperature at this point.The'steam pipe 16 is connected by means of coupling 19 to a pipe 20leading from any suitable source of steam supply.

The invention when applied to the fire box of a locomotive or similarboiler furnace is of substantially the same construction althoughchanged in position and in details. In the form shown in Figs. 3 and 4:,the nozzle member 21 extends for the width of the fire box and isprovided at opposite ends with the coupling members 22, while its upperportion is formed with an elongated spray or sheet opening 23,preferably directed downward, as shown in Fig. 3, so as to dischargeupon the fuel in the fire box. This form of arch nozzle may be used inplace of the series of nozzles, as shown in Fig. 2. The nozzle ismounted upon the coupling 24 which is provided with an inlet opening 25communicating with the fire box and with the air pipe 26. This couplingmember is provided with a sleeve 27 by which connection is effected withthe air feedpipe 28. Extending through this feed pipe and terminatingwithin the air pipe 26 is a steam inlet 29 curved upward at its innerend 30 so as to be disposed within the air pipe and Communicating withthe discharge into the nozzle causing an lnjecthrough the feed pipe 33extending to any point of boiler connection or steam supply.

It will be seen that in each form of the invention the steam jet causesthe injection of air which is heated in its passage to the nozzlemember, and when introduced therein causes a suction through the nozzlemember drawing in the highly heated smoke and gases in the fire box anddelivering them above the fuel so as to cause a complete combustionthereof and a very high temperature within the fire box owing to thepresence of the oxygen carried in by the air and steam which beingsuperheated by the products of combustion themselves is introduced tothe fire box at such a high temperature as to prevent any deadeningefiect and also to increase the combustion of the gases above the fuelthus preventing the emission of smoke through the stack and economizingin fuel by increasing the temperature of the fire box to a high degreethrough the combustion of the smoke and gases therein. In the form ofthe invention shown in Figs. 1 and 2 the air pipe extends within thefire box and the air is thus highly heated before the steam isintroduced therein so that the superheating through the nozzle member isreadily effected before delivering to the fuel through the spray orsheet nozzles. In the form shown in Figs. 3 and 4: the air iseffectually heated by the steam injection therein before itsintroduction into the nozzle member.

Having thus described my invention and set forth its merits, what Iclaim and desire to secure by Letters Patent is 1. In a smoke consumer,a nozzle member having an inlet opening communicating with a fire boxand an outlet opening also comhaving inlet and outlet openings bothcommunicating with a fire box, an air pipe communicating with the inletportion of said nozzle and disposed within said fire box, and a steampipe disposed within the inlet of said nozzle at a point beyond the airpipe connection therewith.

8. In a smoke consumer, a series of nozzle members embedded in the frontwall of the fire box and having inlet and outlet openings disposed inparallel horizontal planes and both communicating with a fire box, anair pipe within the fire box connecting the inlet portions of saidnozzles, and a steam pipe provided with a series of injectors disposedin said nozzles.

4. In a smoke consumer, a nozzle member comprising a circular inletopening and an elongated discharge opening both in communication with afire box, an air pipe communicating with the inlet portion of saidnozzle within said fire box, a steam injector disposed within said inletportion beyond the air pipe, and a sleeve mounted thereon to surroundthe entrance of said injector.

In testimony whereof I aifix my signature in presence of two witnesses.

CHARLES H. TRIGGS.

Witnesses:

J. JAoKsoN PEIRCE, WALTER P. LEWIS.

